CN206189268U - System for utilize groundwater regulation and control pitch bridge deck pavement temperature - Google Patents

Abstract

The utility model discloses a system for utilize groundwater regulation and control pitch bridge deck pavement temperature, including cistern, sedimentation tank, water pump and pipe network, the input port of cistern pass through the water pump and connect groundwater, the input port of sedimentation tank is connected to the delivery outlet of cistern, the input port of the defeated outlet connecting tube net of sedimentation tank, groundwater is connected to the delivery outlet of pipe network, the pipe network lay on the concrete bridge of bridge floor panel to the layer covers under being mated formation to pitch. The technical effects of the utility model comprises, it is effectual to the bridge floor heat transfer, alleviated the bridge floor well and easily frozen summer high temperature winter and produce the problem of rut, solve the two major disease problems of bridge simultaneously. And it is energy -conserving high -efficient, clean environmental protection can not produce the harm to the pontic structure, and the controllability is strong.

Description

The system that a kind of utilization underground water regulates and controls asphalt bridge deck temperature

Technical field

The utility model is related to the system that a kind of utilization underground water regulates and controls asphalt bridge deck temperature.

Background technology

Highway bridge traffic is the important way of people masses trip.Bridge floor is when temperature is relatively low in the winter time, bridge deck surfaces wind Speed is generally large, easily causes bridge floor to freeze.After bridge floor freezes, the vehicle travelled on bridge floor triggers brake to lose often due to skidding Spirit and direction out of control, cause personnel's property injures and deaths.Except bridge floor ice formation issues, asphalt bridge deck can also be produced under prolonged cold The phenomenons such as raw mechanism collapse, the reduction of cracking, pit, rut and anti-slide performance, influence bridge is normally used.

For a long time under sunlight irradiation, its surface temperature is often than day highest for bridge asphalt pavement when summer temp is higher Temperature is higher by 20~30 DEG C.The automobile for being travelled on temperature road surface higher for a long time, tire pressure is easy to rise, and accelerates tire mill Damage causes to blow out.Meanwhile, summer bridge floor easily produces the diseases such as rut, significantly under the collective effect of high temperature and vehicular load The service life of deck paving is shortened, huge economic loss is caused

Solving the conventional method of winter bridge floor low temperature icing at present has：

1. Snow Agent method is spread

2. artificial mechanism deicing method etc., the suitable road and bridge deicing in most cases of these methods, however it is necessary that consumption Take substantial amounts of manpower and materials, it is less efficient, and road bridge floor and surrounding environment can be caused damage.Based on this, domestic and foreign scholars Begin one's study other road and bridge deicing modes, such as：

3. microwave ice removing method：The nineties in 20th century, colonial was proposed using the method for microwave ice removing.Than traditional people Work, snow removal with machine and Snow Agent snow removing, microwave ice removing are owned by France in a kind of heating power snow melt method, and ice sheet does not absorb microwave thermal directly Power, but microwave can heat ground surface material through ice sheet, and the ice sheet on road surface and ice sheet combination interface is melted first, recycle machinery Method crushes ice sheet, with environmental protection, quick and deicing thoroughly advantage.Using microwave ice removing, wanting raising deicing efficiency need to examine Consider to be added in Expressway Pavement Material and contain magnetic material, therefore early investment is larger, therefore up to the present do not obtain also extensively Quote；

4. conducting concrete method：Graphite, the carbonaceous such as steel fibre or ferrous material is added in normal concrete to be allowed to have Certain electric conductivity, after the conductive energy of concrete, it is possible to as other conductors, connects when with external power source Heat will be produced later, so as to reach the purpose of road snow melt deicing.The utilization of this technology can preferably realize efficiently, Clean, contamination-freely remove the snow.Although the research of current conducting concrete achieves larger progress, melt for road deicing Snow aspect also rests on small range experimental stage, and is essentially confined to the platelet experiment of interior and melting for outdoor single big plate experiment Snowization ice is analyzed, and lacks the analysis and research of engineering actual tests on a large scale.This method up-front investment is larger, will to construction technology Ask comparing high, and later stage observable index is larger, so being not appropriate for utilization on a large scale.

5. heating cable method：It, with electric power as resource, is heater to bury the cable being distributed in structure sheaf that heating cable method is, Heat energy is converted electrical energy into, heat transfer to road surface carries out deicing or snow melting.This method has pollution-free, efficiency high, fortune The advantage such as row expense is low, heat endurance is good, easy to control.Many researchers both domestic and external compare this method through going In-depth study.The cost of heating power tube method is higher, the energy consumption in later stage also than larger, and due to cable embedment structure sheaf in, Once breaking down, maintenance management is inconvenient.

And for the maintenance work of bridge pavement summer, typically based on to repair afterwards, be on the one hand difficult to eliminate in time Bridge deck surfaces hidden danger, one side financial cost is larger, labor intensive material resources.At present, the rut maintenance technique scheme of bituminous paving Formulation it is main from from the aspect of material internal and Pavement Structure Combination, also there is scholar to be done in terms of cooling preventing and treating rut both at home and abroad Study and propose certain methods, such as：1. sprinkle water falling temperature method：Lowered the temperature in the section watering of a summer high position, strong operability is shown in Effect is fast.But watering cooling cost is than larger, surface gathered water can cause to hinder to driving, at the same ponding may by space and Crack is into damaging inside road structure.2. road surface heat reflection method：Road surface heat reflection method refers to be added newly in road surface Type heat-reflective coating material and thermal resistance material are lowered the temperature to road, and cooling-down effect substantially, and meets Pavement Performance requirement.But this Item technology is ripe not enough, realizes that difficulty is big, and construction costs is high, is now only limitted to laboratory research.

Underground water source is a kind of important natural resources, due to the thermostatic characteristics of underground water source, except that can supply life With outside water, thermal resource can also be picked and placeed as one kind by the use of the thermostatic characteristics of underground water.The temperature of underground water is maintained at 11 throughout the year ~20 DEG C, early favorably carry out building the groundwater heat pump technology of temperature adjustment with underground hydro-thermal source both at home and abroad, technology is more ripe. Underground water has the following advantages that as thermal resource is picked and placeed：1. clean environment firendly；2. it is renewable to recycle；3. temperature is highly stable； 4. distributivity is wide.If bridge is in the area of rich groundwater, underground water is extracted out and is prevented for bridge floor preventing freeze in winter and summer High temperature rut is highly effective.

The content of the invention

In order to solve current bridge floor climate influence, cause bridge rapid wear, and produce dysgenic technology to ask on vehicle Topic, the utility model provides one kind can effectively control bridge deck temperature, and the utilization underground water that energy resource consumption is few, environmental pollution is small to adjust The system for controlling asphalt bridge deck temperature.

In order to realize above-mentioned technical purpose, the technical solution of the utility model is,

The system that a kind of utilization underground water regulates and controls asphalt bridge deck temperature, including cistern, sedimentation basin, water pump and pipe Net, the input port of described cistern connects underground water by water pump, and the delivery outlet of cistern connects the input port of sedimentation basin, sinks The delivery outlet in shallow lake pond connects the input port of pipe network, the delivery outlet connection underground water of pipe network；

Described pipe network is layed on the concrete slab of bridge floor, and is covered under asphalt mixture surfacing.

The system that a kind of described utilization underground water regulates and controls asphalt bridge deck temperature, the input port of described cistern sets It is placed on the side wall of cistern, filter screen is provided with cistern, described filter screen is set around the input port of cistern, and and retaining The inwall in pond forms confined space to filter the underground water being input into by input port, and the delivery outlet of cistern is arranged at the bottom of cistern On wall and outside filter screen.

The system that a kind of described utilization underground water regulates and controls asphalt bridge deck temperature, the input port of described sedimentation basin and Delivery outlet is respectively arranged on the side wall of sedimentation basin, and delivery outlet is arranged at the 3/4 of pool wall total height, and the position of delivery outlet is high In heater is additionally provided with input port, sedimentation basin, described heater is fixed on the bottom wall of sedimentation basin.

The system that a kind of described utilization underground water regulates and controls asphalt bridge deck temperature, described pipe network uses snakelike parallel connection Arrangement, it is described it is snakelike be arranged in parallel including multiple pipe laying units, water inlet manifold and total outlet pipe, each pipe laying unit is included One snake pipe, water inlet, a delivery port and the valve for bending setting of spiraling, described water inlet passes through valve Door is connected to water inlet manifold, and described delivery port connection total outlet pipe, described snake pipe is embedded under asphalt mixture surfacing, Multiple pipe laying units are arranged in parallel successively.

The system that a kind of described utilization underground water regulates and controls asphalt bridge deck temperature, described piping network laying position and bridge The distance in face is 5-15cm.

A kind of described utilization underground water regulates and controls the system of asphalt bridge deck temperature, the spacing between each pipe laying unit It is 5-20cm.

The system that a kind of described utilization underground water regulates and controls asphalt bridge deck temperature, described snake pipe uses external diameter 6-18mm, the stainless steel pipes of wall thickness 0.5-3mm.

Of the present utility model to have technical effect that, to bridge floor good effect of heat exchange, alleviating bridge floor winter well easily freezes Summer high temperature produces the problem of rut, while solving the problems, such as the major disease of bridge two.And efficient energy-saving, clean environment firendly will not be right Crossstructure produces infringement, and controllability is strong.

The utility model is described in further detail below in conjunction with the accompanying drawings.

Brief description of the drawings

Fig. 1 is structural representation of the present utility model；

Fig. 2 is the utility model bridge floor pipe network structure profile；

Fig. 3 is the utility model bridge floor pipe net arrangement form schematic diagram；

Fig. 4 is bridge floor heat transfer process schematic diagram；

Fig. 5 is reservoir structure schematic diagram；

Fig. 6 is sedimentation basin structural representation；

Fig. 7 is to use winter bridge deck temperature distribution map after the utility model；

Fig. 8 is to use cooling in summer situation schematic diagram after the utility model；

Fig. 9 be the utility model using different pipeline enclosures away from bridge floor mean temperature change over time figure；

Figure 10 be different buried depth under the conditions of bridge floor mean temperature change over time figure；

Figure 11 is stable state bridge floor mean temperature and pipe net arrangement mode graph of a relation；

Figure 12 is that bridge floor mean temperature changes over time figure under differently descending water temperature condition；

Figure 13 is heating duration and bridge floor mean temperature variation diagram；

Wherein, 1 be cistern, 2 be sedimentation basin, 3 be water pump, 4 be underground water, 5 be bridge floor, 6 be pipe network, 7 be ground, 8 For concrete slab, 9 be asphalt mixture surfacing, 10 be snake pipe, 11 be water inlet manifold, 12 be total outlet pipe, 13 be valve, 14 for cistern input port, 15 for cistern delivery outlet, 16 be filter screen, 17 for sedimentation basin input port, 18 be sedimentation basin Delivery outlet, 19 be heater

Specific embodiment

The utility model is made up of two parts：Bridge floor pipe network part and underground water intake, retaining part.When system works, from Thermostatted water is extracted in underground, and the removal of impurity is gone through row filtering precipitation in sedimentation basin, then applies certain pressure to thermostatted water, flows through it Bridge floor pipe network is exchanged heat to bridge deck structure so as to reach the purpose of bridge floor temperature control, and back flows back into ground eventually through delivery port Under.

Referring to Fig. 1, the present embodiment includes cistern, sedimentation basin, water pump and pipe network, and the input port of described cistern passes through Water pump connects underground water, and the delivery outlet of cistern connects the input port of sedimentation basin, and the delivery outlet of sedimentation basin connects the input of pipe network Mouthful, the delivery outlet connection underground water of pipe network.

Referring to Fig. 2, bridge floor pipe network part is arranged on bridge deck pavement.Influence so will not be both produced on bridge deck structure, and Can be close to road surface to obtain good heat transfer effect, and pipe net arrangement is easy to construction in bridge pave-load layer, at the same again for Deck paving serves the effect of reinforcement.

Referring to Fig. 3, the chief component of bridge floor pipe network is total inlet and outlet pipe lines, valve, embedment pipeline etc..

Wherein total inlet and outlet pipe lines are arranged in bridge both sides, are responsible for conveying constant temperature underground water and reclaim the underground after heat exchange Water.

Winter intensification or cooling in summer either are carried out to deck paving using underground water, its heat-exchange system can all simplify It is such as Fig. 4

Hereinafter its specific embodiment is introduced by temperature-controlling system different component：

First, cistern and sedimentation basin part

The underground water flowed into bridge deck pavement pipe network must assure that can not there is too many impurity, in order to avoid block pipeline.Retaining In addition to for accumulating thermal water, the also simultaneous effect with preliminary impurity screening, sedimentation basin is then used to further carry out precipitated impurities in pond And have the effect of heating underground water under extreme weather concurrently.

Specifically arrangement is as follows for cistern：

1st, position：Cistern is arranged in below ground and is easy to insulation, while position should not tie up very much in order to periodic cleaning deeply Shield；

2nd, size：By temperature-controlling system work when institute's water requirement determine；

3rd, material：Cistern pond body material selection coarse sand rubble+decorative mortar.

4th, construct：Cistern is made up of gap and filter screen part and delivery port.Cistern delivery port sets filter screen, with pre- Anti- drift blocks pipeline, and the specific dimensions of filter screen is depending on the situation of job site.Such as Fig. 5.

5th, other：To ensure that cistern normally runs, artificial desilting treatment should be periodically carried out.Should be blocked during not retaining in pond Irrigation channel.

Specifically arrangement is as follows for sedimentation basin：

1st, position：Sedimentation basin is arranged in below ground and is easy to insulation, while position should not tie up very much in order to periodic cleaning deeply Shield；

2nd, size：By temperature-controlling system work when institute's water requirement determine；The time is needed during sedimentation basin precipitated impurities, so size It is unsuitable too small；

3rd, material：Sedimentation basin pond body material selection coarse sand rubble+decorative mortar；

4th, construct：Sedimentation basin is made up of gap and heating part and delivery port.Sedimentation basin delivery port sets filter screen, with pre- Anti- drift blocks pipeline, and the specific dimensions of filter screen is depending on the situation of job site.Such as Fig. 6.

5th, other：Sedimentation basin should periodically carry out artificial desilting treatment.Irrigation channel should be blocked in pond during not retaining.

2nd, outside aqueduct part

Transport pipeline is arranged and bridge both sides, is responsible for conveying constant temperature underground water and reclaims the underground water after exchanging heat.Delivery tube Road can have certain slope change to ensure water velocity when arranging.Transport pipeline should have good heat-insulating property, delivery tube Road outer layer should wrap up certain thickness insulation material to play the effect of insulation and protective conduit, and aqueduct is specifically arranged such as Under：

1st, position：The aqueduct of sedimentation basin is connected with fixed master in spiral insertion soil layer, is set every 3m~5m One；Positioned at the aqueduct of bridge both sides, bridge outside is directly set up in using pipe clamp etc., its process control high is with pipeline rout Elevation is gradually reduced and is advisable；Connection above ground portion and the pipeline of bridge floor part, depend on bridge pier, are fixed using pipe clamp.

2nd, size：By temperature-controlling system work when institute's water requirement determine；

3rd, material：Transport pipeline should choose that thermal conductivity factor is small and material with some strength in itself, and secondly, material should also With certain anti-corrosion capability.Polystyrene rigid foam shell is chosen as transport pipeline material；Pipeline external can Wrap up certain thickness insulation material.

4th, other：Aqueduct connects pipe network at subsurface sedimentation basin and bridge floor, need to ensure pressure to meet transport underground The head requirement of water, might have the loss of flood peak, rounding off when need to ensure that aqueduct is turned during pipeline turning.Install Cheng Houying carries out hydraulic pressure test.

5th, operation technological process：

1) below ground Pipe installing：

1. according to the position of design drawing, measure, piling, unwrapping wire, shoveling, formed pipe groove etc..

2. the smooth of pipe-line tank is kept, to prevent pipe bending unbalance stress.

3. main pipeline is fixed in pipe-line tank with spiral, is fixed at a certain distance.

4. before pipeline enters groove, should check whether bottom land absolute altitude and the size of pipe-line tank meet design requirement, whether is heat-insulation layer There is damage.Pipeline first should carry out segmentation welding in limes marginis.When putting pipe, note avoiding pipe bending.

6. when groove interior conduit is welded, must be cleared up before connection.

2) bridge floor both sides Pipe installing：

1. the installation site of design code is pressed, the support position on support, erection support is measured.

2. after support is firmly installed, erection Pipe installing is carried out, pipeline and pipe fitting should be assembled on ground, and length is in order to hang Dress is advisable.

3. lifting pipeline should make pipeline not produce bending to be advisable.The pipeline section for not yet connecting is lifted, with the card on support Son is fixed.

When 4. using welding, welded again after pipeline whole rigging out.Weld seam not may be provided on bracket and bearing.

3rd, pipe net arrangement mode in pave-load layer

1st, position：In bridge deck pavement, the buried depth of pipe network can influence the heat transfer effect of pipe network and bridge floor to pipe net arrangement, warp Cross research to show, on the premise of ensureing that pipe network stress does not cause pipe network to damage, can as far as possible reduce the buried depth of pipe network；

2nd, size：The caliber of pipe network determines that institute's water requirement then changes with needed for bridge floor by the temperature-controlling system when institute's water requirement that works Heat is determined, relevant with bridge external condition.Caliber is unsuitable excessive, can cause the presence of too many air in pipeline, influence heat exchange effect Rate；Caliber is also unsuitable too small simultaneously, with reference to taking external diameter 12mm, the stainless steel pipes of wall thickness 1mm.；

3rd, material：The pipe laying tubing of bridge floor is imbedded, should be had the following characteristics that：(1) intensity of tubing will height；(2) pipe laying should There should be preferable heat transfer property；(3) tubing should have stronger corrosion resistance.Middle work of mating formation is embedded into view of tubing When suffered stress it is larger, using stainless steel as embedment tubing material；

4th, construct：The paving mode for imbedding grid is arranged in parallel mode using snakelike.The gradient and deck profile grade of pipe laying It is consistent with horizontal wall inscription.Snakelike arrangement can improve the heat exchange efficiency of fluid and bridge floor, and parallel connection refers to that many pipelines are constituted into one to bury Pipe unit arranges that each pipe laying unit has a water inlet, a delivery port and a control valve, can improve the profit of underground water With efficiency, and the probability that smaller whole pipe network is blocked.Research has shown that, the spacing between pipeline can also influence the heat exchange of system to imitate Rate, the smaller heat exchange efficiency of spacing is higher, but cost increases therewith, with reference to taking 15cm：

5th, construction procedure：

1. bar-mat reinforcement is placed on floorings to be used to fix pipe network；

2. after bar-mat reinforcement is installed, pipe network is assembled in units of unit on ground, is lifted to fixed position on bar-mat reinforcement, can not Pull to avoid pipe network flexural deformation；

3. by pipe network colligation on bar-mat reinforcement, and spot welding is carried out with fixation.Reinforcing bar can be in addition padded between bar-mat reinforcement and pipe network To regulate and control the buried depth of pipe network；

4. examination water experiment is carried out, the water with certain hydraulic pressure is imported with water pump in water inlet, and checked and mending-leakage；

5. casting concrete covering pipe network, cast concrete before intake-outlet should be wrapped up prevent enter cement mortar and Impurity.

The present embodiment beneficial effect compared with conventional art has：

First, to bridge floor good effect of heat exchange, the problem that bridge floor winter easy icing summer high temperature produces rut is alleviated well, The major disease of bridge two is solved the problems, such as simultaneously, system heat transfer effect is discussed respectively by winter with summer situation：

1st, winter situation

Numerical simulation is carried out through COMSOL softwares, -3 DEG C of winter external temperature, under the conditions of wind speed 3m/s, pipe network buried depth 15cm Spacing 15cm, under the conditions of 15 DEG C of water temperature, after system is opened, Temperature Distribution such as Fig. 7 during bridge deck temperature stabilization.

Bridge deck temperature basically reaches more than 3 DEG C, and portion temperature is close to 4 DEG C, and heating effect is obvious.

2nd, cooling in summer situation

35 DEG C of summer external temperature, under the conditions of wind speed 3m/s, pipe network buried depth 15cm spacing 15cm, under the conditions of 15 DEG C of water temperature, There is sunlight to irradiate, after system is opened, there is pipe network to lower the temperature and change over time trend such as Fig. 8 without the bridge deck temperature that pipe network is lowered the temperature.

2nd, efficient energy-saving

It is very efficient energy-saving that temperature control is carried out to bridge floor using groundwater circle system in the area rich in groundwater resources , this kind of and stratum heat-exchange system Energy saving mechanism is the energy that system need to only consume 1 kilowatt, and user can obtain 4 kilowatts Heat or cold above, therefore energy-saving effect is significantly, can substantially reduce bridge maintenance cost.And, because soil has Good heat storage performance, in the winter time, Lowlevel thermal energy is heated to bridge by the circulatory system and stores cold, in case summer grade；Summer The heat of bridge is transferred to underground and is stored by season, in case the winter is used, so as to balance terrestrial heat flow.

Heat-conduction concrete method, the heating cable method of other technologies such as winter heating, watering method of summer etc. are all extremely to consume Take being produced a desired effect, it is necessary to expend substantial amounts of energy for resource, efficiency comparison is low.

3rd, clean environment firendly

Due to being that used as picking and placeing thermal resource, this heat-exchange system is very clean environment firendly using the reproducible underground water of cleaning , destruction will not be produced to surrounding environment.

Other technologies such as winter prevents the salting method for freezing from certain infringement can be caused to surrounding environment.

4th, infringement will not be produced to crossstructure.In pipe network structure embedment bridge deck pavement, the tune of pipe laying spacing and buried depth The whole influence to deck paving bitumen layer mechanical property is smaller, while shadow of the pipe network thermal source generation temperature stress to asphalt mixture surfacing Sound is also negligible；

Mechanical deicing's method in other technologies such as winter and the watering falling temperature method of summer all can produce certain infringement to bridge floor.

5th, controllability is strong.Temperature-controlling system can adjust pipe network spacing and buried depth according to the weather conditions in bridge location, meet with Also can be passed through the underground water temperature in pipe network by change in time to control bridge floor temperature field to reach expection when meeting extreme weather Temperature control effect.Now respectively from the factor such as pipe network buried depth, pipe network spacing, the underground water temperature for being passed through pipe network discuss heat-exchange system can Control property.The buried depth and spacing that proof Practical Project can adjust suitable pipe network carry out the local weather conditions of bridge, meet with extreme day During gas, also can adjust water temperature to make system reach expected heat transfer effect.

1st, pipe network factor

Fig. 9 is pipe network buried depth 15cm, and 15 DEG C of ground water temperature, pipe laying spacing is respectively 5cm, the condition of 10cm, 15cm, 20cm Lower bridge deck surfaces mean temperature with the heat time variation tendency, groundwater velocity is defined as very big (100L/min), will Pipe network is reduced to constant warm tube consideration.

By Fig. 9, the variation tendency of bridge floor mean temperature is all first to increase then to tend towards stability, and this is due to bridge floor heating one Bridge floor can reach balance with the heat exchange of extraneous and pipe network after the section time, and temperature no longer changes, that is, reach stable state.With pipe laying spacing Increasing, it can be seen that：1. the final steady temperature to be reached of bridge floor is constantly reduced.2. the efficiency of heating surface of temperature-controlling system with Reduced away from increase.The efficiency of heating surface of temperature-controlling system is a key factor for influenceing temperature control effect, the temperature-controlling system efficiency of heating surface It is high, it is meant that system has exchange capability of heat stronger in the unit interval, and the heat time of bridge floor is also shorter, while adapting to extreme The ability of microthermal climate is also stronger.

2nd, pipe network buried depth factor

Study the buried depth of pipe network for heating effect influence when, it is constant to take pipe laying spacing 15cm, 15 DEG C of water temperature, changes Become its buried depth to study bridge floor heating effect.Pipe network buried depth should not be excessively shallow, and otherwise pipe network easily bears larger load and causes Deformation, while to ensure heating effect, buried depth is unsuitable excessive, finally takes and studied between buried depth 5cm to 15cm.Figure 10 For the trend that pipe laying buried depth is changed over time for bridge floor mean temperature in the case of variable.

As can be seen that as the increasing of buried depth, bridge floor stable state mean temperature decline therewith, pipe laying depth is averagely warm with surface It is negatively correlated between degree；Meanwhile, buried depth is smaller, and bridge floor is shorter the time required to reaching preferable heating, and efficiency is higher.

3rd, pipe network spacing and buried depth consider

Bridge deck surfaces mean temperature, the efficiency of heating surface and pipe laying buried depth, pipe laying spacing have substantial connection, it is contemplated that real Border is applied man-hour requirement and determines bridge floor heating effect according to objective condition and then determine suitable pipe net arrangement scheme, by multiple mould Intend, mean temperature when showing that bridge floor reaches stable state reaches preferable heating with the relation and bridge floor of pipe network buried depth and pipe network spacing Heating duration needed for state and pipe network buried depth and the synthetic relationship of pipe network spacing, such as Figure 11.

Mean temperature and bridge floor are heated to duration needed for 3 DEG C of mean temperature during bridge floor stable state has with the arrangement of pipe network Very big relation, integrates and can be seen that：

1. pipe network spacing is bigger, and bridge deck surfaces temperature is lower, more long the time required to heating；Pipe network buried depth is smaller, bridge floor table Face temperature is higher, shorter the time required to heating.But influence of the buried depth to heating duration and final heating effect is bigger.

2. in the case of heating effect or heating duration identical, there are different pipe network combinations.Such as spacing 5cm, bridge floor stable state mean temperature reaches 6 DEG C during buried depth 10cm, buried depth 5cm, and bridge floor steady temperature equally can be with during spacing 20cm 6 DEG C are reached, but buried depth 5cm, spacing 20cm scheme, obviously than buried depth 10cm, spacing 5cm costs are low, it is preferential in Practical Project Using buried depth 5cm, spacing 20cm schemes.

3. the smaller heating effect of spacing is better but cost is improved therewith, in the case where pipe network stress safety is ensured, can be with Pipe network buried depth is reduced as far as possible to obtain more preferable heating effect and the efficiency of heating surface.

4th, water temperature factor

Generally, for a certain specific region, average value and the minimum of annual winter temperature will not produce too big change Change, but sometimes can also produce some extreme weathers.Bridge floor temperature-controlling system in for being used in Practical Project, once occur Extreme low temperature weather, the arrangement of pipe network can not Iterim Change, in order to reach expected heating effect, it is necessary to pass through control Heater in warm system adjusts the water temperature in pipe network and flow velocity and then changes bridge deck temperature.

As Figure 12 be buried depth 5cm, spacing 10cm pipe networks be passed through the underground water of different temperatures after bridge floor mean temperature with heating The variation tendency of time, it can be seen that pipe network is passed through temperature underground water higher, bridge floor can reach ideal within the shorter time Heated condition and with steady temperature higher, it is seen then that improve underground water temperature and be obtained in that more preferable heating effect.

Assuming that in Practical Project utilization, the pipe network buried depth and spacing of bridge floor arrangement are originally designed to be -3 DEG C of reply temperature, The external condition of wind speed 3m/s, meets with extreme weather in a certain year, and external environment condition is changed into -5 DEG C of temperature, wind speed 4m/s, such as Figure 13, Between 0~10h, bridge floor pipe network is passed through 15 DEG C of underground water, reaches 0 DEG C or so of bridge floor mean temperature after stable state, it is clear that Bu Nengman Sufficient ice-melt effect, since 10h, is heated by the heating system of sedimentation basin to underground water, its temperature is raised 6 degree, i.e., Underground water temperature reaches 21 DEG C in pipe network.After being passed through heating four hours of underground water, bridge deck temperature reaches stable state and maintains again At 2.5 DEG C or so, it is seen that it is feasible that different operating modes are tackled by adjusting underground water water temperature, this guarantees underground water bridge floor The unfailing performance of temperature-controlling system reply burst extreme weather.

Claims (7)

1. the system that a kind of utilization underground water regulates and controls asphalt bridge deck temperature, it is characterised in that including cistern, sedimentation basin, Water pump and pipe network, the input port of described cistern connect underground water by water pump, the delivery outlet connection sedimentation basin of cistern Input port, the delivery outlet of sedimentation basin connects the input port of pipe network, the delivery outlet connection underground water of pipe network；

Described pipe network is layed on the concrete slab of bridge floor, and is covered under asphalt mixture surfacing.

2. the system that a kind of utilization underground water according to claim 1 regulates and controls asphalt bridge deck temperature, it is characterised in that The input port of described cistern is arranged on the side wall of cistern, and filter screen is provided with cistern, and described filter screen is around retaining The input port in pond is set, and forms confined space to filter the underground water being input into by input port, cistern with the inwall of cistern Delivery outlet be arranged on the bottom wall of cistern and outside the filter screen.

3. the system that a kind of utilization underground water according to claim 1 regulates and controls asphalt bridge deck temperature, it is characterised in that The input port of described sedimentation basin and delivery outlet are respectively arranged on the side wall of sedimentation basin, and delivery outlet is arranged at pool wall total height At 3/4, and the position of delivery outlet is higher than input port, and heater is additionally provided with sedimentation basin, and it is heavy that described heater is fixed on On the bottom wall in shallow lake pond.

4. the system that a kind of utilization underground water according to claim 1 regulates and controls asphalt bridge deck temperature, it is characterised in that Described pipe network is arranged in parallel using snakelike, described snakelike to be arranged in parallel including multiple pipe laying units, water inlet manifold and always go out Water pipe, each pipe laying unit includes a bending and spirals the snake pipe of setting, a water inlet, a delivery port and one Valve, described water inlet is connected to water inlet manifold, described delivery port connection total outlet pipe, described coiled pipe by valve Road is embedded under asphalt mixture surfacing, and multiple pipe laying units are arranged in parallel successively.

5. the system that a kind of utilization underground water according to claim 1 regulates and controls asphalt bridge deck temperature, it is characterised in that Described piping network laying position is 5-15cm with the distance of bridge floor.

6. the system that a kind of utilization underground water according to claim 4 regulates and controls asphalt bridge deck temperature, it is characterised in that Spacing between each pipe laying unit is 5-20cm.

7. the system that a kind of utilization underground water according to claim 4 regulates and controls asphalt bridge deck temperature, it is characterised in that Described snake pipe uses external diameter 6-18mm, the stainless steel pipes of wall thickness 0.5-3mm.